neovim-config/lua/core/hooks.lua
2021-09-24 19:11:55 +05:30

69 lines
1.4 KiB
Lua

local hooks, overrides, M = {}, {}, {};
local allowed_hooks = {
"install_plugins",
"setup_mappings",
"ready",
}
local function has_value (tab, val)
for _, value in ipairs(tab) do
if value == val then
return true
end
end
return false
end
M.add = function(name, fn)
if not(has_value(allowed_hooks, name)) then
error("Custom lua uses unallowed hook " .. name)
end
if hooks[name] == nil then
hooks[name] = {}
end
table.insert(hooks[name], fn);
end
M.run = function(name, args)
if hooks[name] == nil then
return;
end
for _, hook in pairs(hooks[name]) do
hook(args)
end
end
M.createOverrides = function(module)
local O = {};
O.get = function(name, default)
local current = default;
if overrides[module] and overrides[module][name] then
if type(overrides[module][name]) == "function" then
current = overrides[module][name]
elseif type(overrides[module][name]) == "table" then
for _, override in pairs(overrides[module][name]) do
current = override(current)
end
end
end
return current;
end
return O;
end
M.override = function(module, name, overwrite)
if overrides[module] == nil then
overrides[module] = {};
end
if overrides[module][name] == nil then
overrides[module][name] = {};
end
table.insert(overrides[module][name], overwrite)
end
return M;